removed the unused usart module

src/usart/CMakeLists.txt

@@ -1,7 +0,0 @@
-add_library(usart STATIC
-    usart.c
-)
-
-target_include_directories(usart PUBLIC
-    ${CMAKE_CURRENT_LIST_DIR}
-)

src/usart/usart.c

@@ -1,81 +0,0 @@
-/*
- * Author: username
- * Date: 2024
- * filename: usart.c
- * description: module_purpose
- */
-
-#ifndef __AVR_ATtiny404__
-#define __AVR_ATtiny404__
-#endif
-
-#include "usart.h"
-#include <avr/io.h>
-#include <string.h>
-
-// These are technically correct, but the libc requires F_CPU for delay stuff
-// that doesn't match the actual F_CPU because it uses the value after the
-// clock is divided.
-
-// #define F_CPU 3333333UL
-// #define F_PER F_CPU / 6
-
-#define F_PER 3333333UL
-#define USART0_BAUD_RATE(BAUD_RATE)                                            \
-  ((float)(F_PER * 64 / (16 * (float)BAUD_RATE)) + 0.5)
-
-// RX PIN6, TX PIN7
-// ALT: RX PIN12 TX PIN11
-void USART0_Init(void) {
-  // Config TxD as output, and rx as input?
-  PORTB.DIR &= ~(1 << 3);
-  PORTB.DIR |= (1 << 2);
-
-  // It says to set the TX pin high?
-  // PORTB.OUT |= (1<<2);
-
-  // set buad rate.
-  USART0.BAUD = (uint16_t)USART0_BAUD_RATE(9600);
-  // USART0.BAUD = 1388;
-
-  // set the frame format.
-  USART0.CTRLC = 0x3; // setting 8-bit mode.
-
-  // Enable transmitter and receiver (USARTn.CTRLB)
-  // USART0.CTRLB |= (1<<7)|(1<<6);
-  USART0.CTRLB |= USART_TXEN_bm;
-}
-
-void USART0_Alt_Init(void) {
-  // setup Alternate pints on PA1 and PA2
-  PORTMUX.CTRLB |= PORTMUX_USART0_ALTERNATE_gc;
-  PORTA.DIR |= (1 << 1);
-  PORTA.DIR &= ~(1 << 2);
-
-  // It says to set the TX pin high?
-  // PORTA.OUT |= (1<<11);
-
-  // set buad rate.
-  USART0.BAUD = (uint16_t)USART0_BAUD_RATE(9600);
-
-  // set the frame format.
-  USART0.CTRLC = 0x3; // setting 8-bit mode.
-
-  // Enable transmitter and receiver (USARTn.CTRLB)
-  // USART0.CTRLB |= (1<<7)|(1<<6);
-  USART0.CTRLB |= USART_TXEN_bm;
-}
-
-void USART0_sendChar(char c) {
-  while (!(USART0.STATUS & USART_DREIF_bm)) {
-    ;
-  }
-  USART0.TXDATAL = c;
-  USART0.TXDATAH = c;
-}
-
-void USART0_sendString(char *str) {
-  for (size_t i = 0; i < strlen(str); i++) {
-    USART0_sendChar(str[i]);
-  }
-}

src/usart/usart.h

@@ -1,35 +0,0 @@
-/**
- * @brief Universal Asynchronout Serial library.
- * @details This file contains the functions for using the avr usart0 periph.
- * @author Jake G
- * @date 2024
- * @copyright None
- * @file USART.h
- */
-
-#ifndef USART_H
-#define USART_H
-
-/**
- * @brief Initializes the USART0 peripheral.
- */
-void USART0_Init(void);
-
-/**
- * @brief Initializes the USART0 peripheral on Alternate pins.
- */
-void USART0_Alt_Init(void);
-
-/**
- * @brief Sends a single char type variable over usart0.
- * @param c The charecter to be sent over usart0.
- */
-void USART0_sendChar(char c);
-
-/**
- * @brief Sends string over usart0
- * @param str A C-style string.
- */
-void USART0_sendString(char *str);
-
-#endif // USART_H